Plate clamp



Oct. 28, 1930. A.

INVENTO .v .II-.1... :Y

Patented Oct. 28, 1930 ,laissez nnnnnnrcx, LAMATSCH, oF-'G'RANTWQOD i nnw anns'nxnssrenon 'ro'ngnon aloof, Y give., on nnW ,Y,oRxk,1\i. v ,ln conronn'rroiror new You;

-App1icatiqnmed-.Nayeynber 1,1921? seriiffno. 230,262.-

flliisinvention relates to'certain improve- :mefntsin,'plate.clamps.y a

In, printing practicev -Where stereotype or similareplates Vare employedfthe plates are lclamped yon the 'plate' support vby means of v certain clamping devices Which--en'gagethe Y movable clamps for clamping tWo plates ony plate supports areV usually in the form'V of o,

cylinders oapacitated V-togcarry four plates Wide,V that is, fourf plates extending across theV cylinder. For* clamping. these. plates, Y ,there isf provided aceiitral lxedrib anoltwo each side of this'rib. `*One of these movable ,clamps `is arranged to [engage the inside edge 0f the f outer platecon one endof the cylinder and the outside edge ofthe inneriplate, the :out/side.' edg'ef of thegouter plate being engaged by the-other movable-clamp, this construction Y being duplicatedon each end of the cylinder.

.In the V.productionso'f certainproducts, itis "frequently desirable f to f produce products having different Widths. As Vfor instance, it

`lmayfzbe necessary rto change from an arrangement fori printing a'product ,eight columns y, Wide Y toY an arrangement whereby a product @nine .columns Widelmaybe printed. Suchr changeiin the `Width ofthe product neces- .:sitates achang'e inthe position of the clamps engaging the plates. A Y

, i, It is the specialobject ofthe; present in- `whereby the position of the clamps may be ;.quicklyand readily changed so that the cylindermay be' plated vWith plates diering. by acolumn Width, or any other predetermined Width ina minimum amount oftime. i 1 A further object of the invention is to produce fa' simple and compact arrangement for f. effecting the desired change in theclarnping arrangement and' an .arrangement Which will effect the clamping of the insideplatesvvhere .nooutside plates are used. Y j ii With these and 'other objects not specifically .referredtolinivewglthe invention consists tion .of the clamps.`-`

in'lcertainlnovel parts,arrangementsand com`` binations Which Will be described Yin connection With. the `accompanying drawings and' the novelfeatures pointed l*out inl thecla'ims hereunto annexed'.- j v l In the drawings* f. g Y, Y YF'gure l is a partly broken 'away sectional view of the plate cylinder'sh'ovving-'the part-s in positionfor clamping narrow plates f' -Figure 2 isasimilarQ-viewj shovvingthe se', parts in .position "'vvhenf'clampingfFfvvid'r Y plates; i Y g; *i Figures 3 ande-aredetail'vievvs'in per# spective showing :the improved; mechanism for quickly effecting the` change in the" posi e5 ,Referring novv to thesefdrayvin'gs,the plate support 'is' shown in the forln ofv a' cylinder y l, which is provided -vvithfthel central `fixed rib or margin bar 2, having the 'rusualluhderl 70 i Ycut clamping faces 3; This'cylinder inay'be icap'acitated to carryl four plates'fvvi'deand .threesuch plates, il, 5 andi, arefshwnQthe plates 5 and, 6 'abutting Vat their''adjacent edges against the iXedfstopQ; "f l i"*j The improved clamping mechanism isl the same atjeach end of the cylinder, such ymef'zlianlsm being shown -at'the left hand end'of the cylinder as clamping th'eplatesftwan'd 5.

Thisclamping mechanismincludes a clamp 80 i bl0ck`7 having bevelled plate-'engaging faces 8, 9, the face SKengagingtheinner'edgerlO of the outer plate 4,-:andthe-face 1-9 ,engagingV theouter edge llrofthe innerplate 5. The outerfedge of the outer plate ,4C is clamped by 85 a clamp block 1.2 having vabevelled.face, 13V zvention` toprovide-fia-simplefarrangement i different vvidths. While thespecificembod- `-ilnentof these means may-be lsomewhat va- Y ried, such meansV will l include spacing -mechansm-v fer the-inner clamp block -7,"b`y fwh'ich 109 the position .of the movable clamp on the oyl- Y inder is determined. As shown, the outer -left to unlooktheinner-plate.

clamp block 12 is threaded on to the usual sorevv rod 15, this rod having a squared end 16 which may be turned through the use of a suitable tool, to; cause a travelling movement of the' Clamp bleek 212.` These'ipartg and other parts hereinafter referred to,are posi tioned in a groove or slot 17 formed in the oylinderw'all-j l f Y i The spaeing`-m`ehanism is'soh 4rthat by a single movement the clamp block 7 maybe permitted a sliding movement in the groove;

As shown, this mechanism ineludes a -vfpuslr rod 18, preferably formed with a head 19 against Whiohthe'clamp L12-may1be^moved for aipu-r'posehereinafterfreferredfto. Thispush rod is-'slidin'gly ysupported so thatfit can be turned tor rotated iin =a bloc-k2() in the ioylinder Wall and its inner end beyond the block is flattened out as indioatedeat 21. VThis flattened end is =arrangedfto "engage vraV slotted l1nembe1222;carriedibyfthe block 7 before 're-V ferred to, `this slotted memberfbeing. preferzablyseparate -from'the block and secured theretogby --a threaded-Shank '-23 screwed finto the block, a looking nut 24 being provided for looking the :slotted fmember 'in :position Thisslotted memberv is iforrned` with `a "deep grooveor 'slot 24' `rand v a sha1-flower groove l'or slot` indicated at 25. It, will -beirobserved that when the filattenedend 21 is in the eposi- -tion :showngin-Figure 1, A it oanenter the inarfrowslotonlyand the block 7 is held in the position :shown in Fig. il; if 'the Irod `18 fis turned to'. theposition "sho-W'n vin Figure f2 rhovvever, 1t can enter -the deep slot E24' of the member 22. -Thispermits the iposif'tioning'o'f ltheblook-? {further-to the leftas shown in that ifigure, tlrus 'permitting the positioning of the Widerfplate 5` -on -thesupport 'With this construe-tion, therefore, the clamp Y-oan be yeryiquiekly ando-easily adjusted :to permit the employmentof narrow or Wider xplat'es. lIt -Will :be understood, `1of -oourse, v`that f suit- -able guidesia-regprovided forthe iblok'., suoli jguidesfbeing-'indicated elaiiip z12 engegingthefoiiterplate. Where,

however, only lthe finnerplates f5, ojare on Afthe cylinder, ithe 'ol'amp is "operated by i the screw rod 1:5 until it engages Atheend 1,9 of the'push rod f18,'vh`ereupoii a further .move- Fm'ent ofthe `elamp looks Vup the plate'by :pushing 'the rod 'to the Iright.: The .olearanoe 'between the sorevv rodj15 andltherod '18,'permits a .movement of rthevelamp ibloelr f7 yto Ythe While fthe invention \is-;shovvn -andx deseribed rinits fpreferredform, fit iwill be @understood tl-iat. 'various `ehanges f'mafy bemoadein the Vform of :the `sipaoinjg mechanism fandf-its arrangementinfthefoylinder y'Without departing from the invention'as defined in the appended claims.

1. In a plate clamp, theoombination of aplate support, a movable clamp block engaging thejouterfedge of an inner platefaifmember-oarriedlbyitheblock :and hav-ing aplurality of `seats of different depths, a rotary member having means for.engagingI one oruthe other of :the -seats tofprvide Vfor holding "the ferent depths with which the `rod oooper'a'tje's' for yiholling the clamp finzvdiiieren-t positions '-ividthvvlise fofithe' cylinder.

4. In ta plate clamp, thefoonilination iofa im Cplate fsupport, a movable lil'amp lon the suprodlhavinglaipiuraiioy'offoperating fao'esfand rafeooperating socket havdngfseaits ofdiiiferent depths *with `rivlfi-ioh1the 'rod v\@operates for i 'holding :the olamp vin `different positions on fthesupport.y 'f i `5. a i Viate iolam'p', the 'combination o'f fa ioylinder., movable `V'alain-lp #on lthe oylifnder ei'igagiiig-ltilie outer iecive i of ian .finner plate, a

'ibo

:difierentydepths Vengageoble :byfthefrodfarseo- Y -ondolamo and 4.meansformimngithelsecond lclamp'antoiengagementiwithithe irod..

f 16. a plate- :elamptlie #combination fof fa plate cylinder, amovable-iclampfblookionithe -eylinder,a "memberioarred iby rthe block :and

the other by an amount equaltothe'diiference in Width '.ofitvvo splates, and Ya-'rod Shaving an =end .capaeitatedy itoiengage rone or the other -7. `YfIn :a iplateiolamp, ithe ioomliinationofga plate eylinderpa liriovable lclamp on the zoylinder fprov-id'ed `with a nnemb'er- Yhawing .a .plurality of sseats, and :a Irotat able push irol having adjustable 'slidinvengagement Aevvithfether ioff the .':seats 'depen ing on the lositionito 8. In a plate .theioombinationiofsa .platezoylinden 'fa :movable-clamp .onrth'e ylinderprovidedwithia'memberfhavingfaiplurality of seats, a rotatable rod having adjustable sliding engagement With either of the seats depending on the position to Which the rod is turned, a Second clamp, and meansrfor moving the second clamp into engagement With the rod.

In testimony WhereoLI have hereunto set my hand.

FREDERICK LAMATSCH. 

